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March 5, 1929. L 1 NEEBE 1,704,624

LOCOMOTIVF FIRE BOX Filed Oct. 23, 1926 4 Sheets-Sheet l www@ March 5, 1929. L. 1 NEEBE 1,704,624

LOCOMOTIVE FIRE BOX Filed ont. 23,` 1926 4 sheets-sheet 2 1 H, www@ 577555 #Mw m7( N e clone o o @www March 5, 1929. L. L.. NEL-:BE 1,704,624

LOCOMOTIVF FIRE BOX Filed oct. 23, 192e 4 sheets-Sheet 3 5 oooooooo March, 1929. NEEBE LOCOMOTIVE FIRE BOX Filed Oct. 23, 1926 4 Sheets-Sheet 4 Patented Mar. 5, 192.9.

` UNITED "STATES PATENT OFFICE.A

LAWRENCE L. NEEBE, F WOODBURY, NIEW JERSEY.

LocoMoTIvE 1mm Box.

Application mea october 2a, 192s. serial N."14s,777.

' the construction of' this type ofboiler, so

that it will withstand the strains to which it is subjected.

Another object of the invention 1s to relieve the water tubes of any duty as supports for the drums, by providing cover and supporting plates which connect the drums with the foundation-ring.

A further object is to locate a saddle directly in front of the back tube-sheet of the boiler which acts as a waistsupport and also as a support for the foundation-ruig, relieving the cover-plates of horizontal stresses. i

` And a still further object is to relieve the back tube-sheet from horizontal stresses causedl by pressure on the backsheads of the drums.

The invention relates also to certain details of construction referred to hereinafter.

In the accompanying drawings:

Figs. Ila and 1b are longitudinal sectional views of a locomotive boiler illustrating my invention Fig. 2`is` a transverse sectionalview on the line 2 2, Fig. 1a; l

Fig. 3 is a transversesectional view on the line 3 3, Fig. 1a; i

Fig. 4 is a sectional plan view on the line Fig. 5 is a sectional view on the line 5 5,

` Fig. 1";

Fig. 6is a detached sectional v1ew showingk the method of attaching the rods to the front tube sheet; l

Figs. 7 and 8 are detached views of the saddle; and

Fig. 9 is a detached perspective view illus trating the forward end of one of the drums.

The boiler l is of the tubular type having a front tube-sheet 2 and a rear tube-sheet 3, to which the horizontal flues 4' are attached. The fire-box 5 is at the rear end of the boiler and the smoke-box 6 is at the front end.

The foundation-ring 7 extends the full length of the fire-box and has two longitudinal side members 8 8, end member 9 9, a central longitudinal member v10, and a cross-member 11.

The particular construction of this foundation-ring is fullyset forth-and claimed in an application filed by me on the 29thV day of January, 1926, Serial No. 84,661.

The rear tube sheet 3 has two o enings,

and surrounding each opening is a ange 12 which projects into the fire-box. Drums 13 extend through the openingsf'in the rear tube-sheet and in the rear plate' 14 of the fire-box. This plate is flanged at`1'5 around the opening. Each drum is riveted to the .flange 12 of the rear tube sheet y3 and also riveted to the flange 15 of the rear plate 14. Each drum extends a considerable distance into'the boiler 1 as shown in Fig. l.

Each drum is flattened at the forward end to fit the contour of theinclined upper portion of thewagon top boiler andis riveted thereto by a series of rivets, Fig. 3. By using the wagon top type of boiler, the drums can be properl located without materially diminishing the number of tubes in the boiler, and the drums are properly located in relation to the steam space of the boiler. The shape of the flattened portions is clearly shown at 13a in Figs. 3 and 9.

Within each drum at its forward end is a boiler above the rods. The rear end-of each l drum is closed by a head 16. The rivets,

`together with the rods 17 which extend to the front tube-sheet shown in Fig. 1", resist any strains due` to pressure on the closed rear ends of the drums. The two drums are tied together by spacers 36 within the boiler. By extending the drums within the boiler, and by securely fastening the forward ends of the two drums to the boiler shell,'the rear plate of the lire-box is relieved from downward pressure.

The two sets of npds 17 are supported midway kof their ends by cross-bars 20, Fig. 5, andthe rods are held onto the cross-bars byr U-shaped clampv members 21. ,The ends of the rods extendthrough the tube-sheet 2 which is beveled as shown in Fig. 6, and on each side of the sheet are 'beveledwashers 22. Adapted to the Vthreads of the rods are nuts 23, whichclamp the washers firmly to Y the tube-sheet.

In front of the foundation frame 7 is' a cast steel saddle 24, shaped as shown in Figs. 7 and 8. rlhis saddle acts as a waist-sheet support andV as a support for the foundation frame, both vertically Vand horizontally.,

In supporting the frame horizontally, it holds the frame against th'eaction o f the boiler pressureon the back of the frame, which tends to pull the frame away from the boiler proper. The anchorage also leaves the side cover plates free of stress, thus allowing ,the cover plates to act only as vertical supports for the drums.

The openings in the foundation frame for the tubes are staggered as shown in Fig. 4.

I .as showny in Fig. 1a and support the bricks 27 `which form part of thebridge-wall 28, the main portion of which is located directly back of the tubes 26. By this arrangement,

the products Yof combustion are deflected towards thefdrums before passing tothe combustionchamber and through themain tubes ofthe boiler. The combustion chamber is between the rear tube sheet 3 of the boiler and the bridge-wall 28yand is of suilicient depth as to prevent the flames striking the rear tube-sheet.V

.l Extending from-each outer edge of the foundation frame,` are plates 29. These plates 29 are attached `to the frame and to brackets 30. on the' drums 13. The plates support, the drums between the front and rearof the fire-box, relieving the water tubes of .any dutyias supports, thereby reducing to a minimum the tendency of the tubes to I l `leak at the connections to the drums and the foundation frame.l These plates also hold the fire-brick lining in place.

The back-plate 14 is rigid and is a permanentpa-rtrof the lire-box. The side plates, however,.are lmade removable so as to Yfacilitate repairs on the fire-bricks` and tubes. Between the'plates 29 and the outer row of tubes 25 is a fire-brick wall 32. The lower portion. of the fire-brick wall embeds both sets of tubes for adistance equivalent to the, depth of thel fire, but the major portion of the wall is tangent to the outerrow of tubes, 'leaving both rows of tubes exposed to the direct heat of the products of combustion. u l There is a double row of fire-bricks 38 between the drums 13-13 which confines the re to the water sideof the drums. The bricks of one row are slightly beveled on one side as shown in Fig. 2, so that when a brick `of one row .is placed, a brick of the other `row can be inserted between the firstmentioned 'brick and the drum. At each front corner of the foundation-ring are tubular extensions 33,'which are coupled by flanged angle pipes 34 to the flanged tubular members 35 openinr into the boiler, so that the circulation of?y water is ymaintained throughout the boiler and the fire-box structure. By this arrangement, the boiler is connected directly with the hollow side members of the foundation-ring. vThe space between the two tubular members 35 of the boiler forms a mud space. In the bottom of the boiler is a wash-out opening closed by a plug 39.

On the outside of the plates 29 and the drums 13v is a suitable lagging or other suitable covering 37, which retains the heat within the fire-box. y

By the above construction, all stay-bolts are dispensed with and the tubes which connect the foundation frame to the drums are not subjected to strains, as. the plates relieve the tubes of the strains, and all pressure on the rear of the drum is resisted by the rods, which are connected to the fronttube-sheet and by rivets connecting the drums to the shell of the boiler.

I claim 1. The combination in a boiler of the lo-v comotivetype, of a shell; front and rear tube-sheets; tubes connecting the sheets; a lire-box at the rear of the Vboiler proper; a foundation-ring at the base of thefire-box;

two drums extending from the rear tubesheet and over the foundation-ring, the drums extending `some distance into the boiler proper; a cross-bar at the front end of each drum; Va series Vof rods all on the same plane and attachedto .the ,cross-bars,

tubes extending from the sides of the founi dation-ring to the drums, said foundationring having Va transverse section some distance from the front thereof; abridge-wall mountedon the transverse section; a series of tubes connected tothe transverse section land extendingdiagonally towards the rear of the fire-box kand coupled to the drums; and deflecting brick-work mounted on the tubes at the rear of the bridge-wall for de- A lfleeting the flame in' theVire-box.

3. The combination in a boiler of the l0- cornotive type, of a shell; front and rear tube-sheets and tubes; a fire-box structure; drums extending through the rear tube-sheet of the boiler and supported by the rear plate of the fire-box, said drums having flattened portions in contact with the shell of the boiler; and means for securing these flattened portions to the shell.

4. The combination in a boiler of the locomotive type, of a shell; front and rear tube-sheets; a fire-box structure consisting of a foundation-ring, two drums located side by side vand extending through the rear tube sheet of the boiler and the rear tubesheet. of the Firebox and secured thereto, said drums extending a considerable distance into the boiler and having flattened portions which conform to the shape of the shell of the boiler, said lattened port-ions of the n drum being secured to the shell of the boiler,

a spacing member located between the two drums at a point near their forward end,

and rods connecting the drums with the front tube-sheet of the boiler.

5. The combination in a boiler ofthe 1ocomotive type, ofr a shell; front and rear tube-sheets; a lre-box at the rear of the boiler having a hollow `foundation-ring; a plate forming the rear end of the lire-box; two drums extending through the rear tube sheet of the boiler and through the rear plate of the fire-box, the rear ends of the drums being closed, the front ends communicating with the interior of the boiler, the drums extending a considerable distance into the boiler, the shell of the boiler being tapered, the drums being `flattened to conform to the taper; rivets securing the flattened portions of the drums to the tapered portion of the boiler; rods extending from the drums to the forward tube-sheet; and intermediate supports for the rods, said supports being secured to the shell of the boiler.

' LAWRENCE L. NEEBE. 

